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Your job is to open a browser window of the default browser to

Your code must open the browser itself, and cannot rely on an open one.

This is , so the shortest answer in bytes wins.

share|improve this question
Are URL shorteners allowed? – isaacg Mar 30 at 15:01
Is it allowed to run JavaScript in the default browser to open a window? – Mwr247 Mar 30 at 15:30
@Mwr247 No, it is not. – Agent CrazyPython Mar 30 at 15:49
You should add clarifications/restrictions to the question itself, since comments are not guaranteed to stick around forever. – Mego Mar 30 at 16:01
Your spec is minimal, which led to alot of uncertainty over what is allowed to accomplish the task. Additionally, some probably consider it a trivial task. Still, you're in the positive ;) – Mwr247 Mar 30 at 17:16

40 Answers 40

up vote 24 down vote accepted

 GNU Emacs, 29 27 14 bytes


EWW is a browser inside Emacs. The browse-web function is an alias for eww, and so that makes eww the default browser in Emacs:

Your job is to open a browser window of the default browser to

Thanks to @CoolestVeto, @Jonathan Leech-Pepin and @zyabin101.

share|improve this answer
Can you use instead of – TimmyD Mar 30 at 15:55
@TimmyD No, at first I tried with "www" but the protocol must be supplied (the behavior is different for example with "mailto://"). For user interaction, there is "browse-url-at-point" which prepends "http", but this is longer of course. – coredump Mar 30 at 16:47
You shouldn't need the //, I don't think. (I don't use emacs, but it's generally accepted without the //) – VTCAKAVSMoACE Mar 30 at 19:03
ಠ_ಠ PPCG is not something to "ewwww" that, that's code review :P – Downgoat Apr 12 at 2:01
Apparently there is It may save you a byte. – zyabin101 Apr 29 at 16:15

Batch, 17 bytes

Saved 3 bytes thanks to Mego.


This will open in your default browser if you run it from the windows command line.

I think it'll work in Powershell too, but I'm not sure.

share|improve this answer
You can use start instead of explorer. – Mego Mar 30 at 15:07
You can use start instead to implicitly have Windows parse it as HTTP. Works in both CMD and PowerShell. – TimmyD Mar 30 at 15:37
Why do you need the www.? – Blender Mar 30 at 20:26
@Blender Because otherwise it tries to find a local program called pccg with the .lol file extension and run it. – Morgan Thrapp Mar 30 at 20:27
@PyRulez It's not a URL shortener, technically. Quill bought that domain a while back and set up a DNS redirect. – Mego Mar 31 at 6:21

Oration, 41 bytes

Not winning, but sure was fun. :P TIED WITH PYTHON!!! :D

I need webbrowser
Now open ""

I need compiles to import $1 with webbrowser being the module.

Now runs the following command from the module as module.command with the arguments of anything following.

So this compiles to:

#!/usr/bin/env python3
import webbrowser"")

I do end up needing the http:// part though, and it can't be shortened.

The code being the same as an earlier revision of @Skyler's answer is a coincidence.

This is the shortest possible Oration code, and I never saw the earlier revision for his answer. The only thing I did was upvote it when it had the "import *" part.

share|improve this answer
As the owner of, I approve of this message. – Quill Mar 30 at 16:13
@Quill thankee for your url. :D It is actually shorter than all the normal url shorteners, btw. – Eᴀsᴛᴇʀʟʏ Iʀᴋ Mar 30 at 16:15
This conversation has been moved to chat. – Dennis Mar 30 at 17:40
@Quill I meant how do we know you won't Rick roll us all at some future point? – PyRulez Mar 30 at 23:55
@Quill that depends on how much you like Rick... – Tom Hart Apr 1 at 15:35

PowerShell, 17 16 Bytes


Using an even shorter domain provided by Milo.


While start is a known alias for Start-Process there is another one for saps. You can see this from Get-Alias. It follows the convention for similar Start- and Stop- cmdlets.

share|improve this answer
psst you can use now – Milo Apr 3 at 2:49
@Milo Thanks. I think other people can hear you. – Matt Apr 3 at 6:35 not working – anukul Apr 3 at 13:16
Hmm. Still works for me and I will presume milo. Perhaps it is new and dns has not fully propogated – Matt Apr 3 at 14:44

Terminal (OSX), 20 18 17 bytes


Saved 2 thanks to CoolestVeto

share|improve this answer
open is an OSX utility, not a bash one; this would be more appropriately called "OSX command line". – Skyler Mar 30 at 15:17
@Skyler Is this incorrect then? – Mwr247 Mar 30 at 15:19
the first line: "Open a file in its default application, using virtual terminal (VT)." If you try to run that on unix, it will tell you "Couldn't get a file descriptor referring to the console", because it's trying to open in a terminal, not in a browser. – Skyler Mar 30 at 15:21
You can get rid of //. – VTCAKAVSMoACE Mar 30 at 18:50
You can save another byte: open – DarkDust Apr 2 at 13:52

MATLAB, 28 25 bytes

web -browser
  • www is shorter than http:// and ensures that the address is processed as a URL
  • This is shorter using the implicit function call (which casts inputs as strings) rather than the explicit version web('', '-browser').
  • If you are on a OS X, this can be simplified to web -browser as MATLAB will automatically append an http:// (21 bytes)


  • On windows this can be shortened to (19 bytes)

  • On OS X (21 bytes)

  • The following would work in a deployed MATLAB application (16 bytes)

  • If the built-in browser could be used this could be reduced even further as http is implied (12 bytes)

share|improve this answer
OS X is redundant because the built-in open command does the same. – Agent CrazyPython Mar 30 at 15:50
@CrazyPython That's precisely what ! does in MATLAB, it's the equivalent of system(command). I had it as more of a demonstration of other alternatives that could be executed from within MATLAB. Is that OK? – Suever Mar 30 at 15:53
Do you need the www.? – VTCAKAVSMoACE Mar 30 at 19:02
@CoolestVeto Sometimes you do sometimes you do not. When using the external browser you do, however the internal browser you do not. If you do not specify it, no browser window will open. If you can get it to work, I'm more than happy to change it! – Suever Mar 30 at 19:07
@CoolestVeto So I dug a little more and it looks like the www is unnecessary only on OS X – Suever Mar 30 at 21:10

AutoHotKey, 16 bytes

share|improve this answer
Unfortunately, not everybody has *shudder* Google Chrome *shudder* set as their default browser (or installed at all!). – wizzwizz4 Mar 30 at 18:23
Not everyone has AHK either...both facts are very shudder worthy – Michelfrancis Bustillos Mar 30 at 18:23
I was shuddering because I had to type... never mind. – wizzwizz4 Mar 30 at 18:26
The challenge spec requires opening PPCG in the default browser, which may or may not be Chrome. – Dennis Mar 30 at 18:40
You don't need the comma – Engineer Toast Mar 30 at 19:31

Python, 52 48 47 45 bytes

Shamelessly borrowing that shortened link.

from webbrowser import*;open("")

Thanks to CrazyPython for -4 bytes, and Sp3000 for a further one.

Edit: shaved 2 more off thanks to CoolestVeto

share|improve this answer
The former change leaves it exactly the same length. As for the http://, if you leave that out it tries to open a local file called "", which doesn't exist. – Skyler Mar 30 at 15:27
You don't need //. – VTCAKAVSMoACE Mar 30 at 19:06
Thanks! I wonder why that works? – Skyler Mar 30 at 19:10
I've always seen the // as convention, I don't think you need it for some browsers. – VTCAKAVSMoACE Mar 30 at 19:12
You can also do this with just command line options python -m webbrowser -t which I think counts as 30 chars – gnibbler Mar 31 at 6:24

Bash, 24 22 bytes


Not as short as some others. firefox is shorter, but it doesn't meet question spec.

share|improve this answer
xdg-open works for me as well. – Digital Trauma Mar 30 at 17:47
@digital_trauma interesting, it didn't for me. It looked for on the file system. Ubuntu 15.10. – Ogaday Mar 30 at 18:29
Weird. Ubuntu 14.04 for me. xdg-utils 1.0. – Digital Trauma Mar 30 at 18:37
You shouldn't need the //. – VTCAKAVSMoACE Mar 30 at 19:03
@CoolestVeto Correct. xdg-open also works for me. – Digital Trauma Mar 30 at 20:18

Java 7, 118 115 bytes

class P{public static void main(String[]a)throws Exception{java.awt.Desktop.getDesktop().browse(new""));}}

Java is not the best language for golfing... Here's the same program in a more readable format:

class P {
    public static void main (String[] a) throws Exception {

Saved 2 bytes by removing // in the URI/L, and another byte by switching to .ga from .lol (indirectly thanks to @Milo)

share|improve this answer
Use interface for shorter code – Mego Mar 30 at 16:34
@Mego I could do that, but then it would be Java 8. This is a Java 7 answer. But thanks for the tip! – Alex L. Mar 30 at 17:11
Replace "" with "" – VTCAKAVSMoACE Mar 30 at 18:59
code-golf specifies that functions are sufficient, you do not have to write a full program. So void f(){ .... } would be enough. – flawr Mar 30 at 19:52
Your program in more readable format is missing a closing parenthesis – Nzall Mar 30 at 22:28

JavaScript, 34 bytes


Uses Node.js

share|improve this answer
Do you need //? – VTCAKAVSMoACE Mar 30 at 19:04
If node.js supports ES6: require`open```; (added ; to avoid tripping the formatting) – Ismael Miguel Mar 31 at 8:17
Alternatively, does it require a protocol? eg require('open')('//') to save 5 bytes – Martijn Mar 31 at 11:56
@Martijn Shh... – wizzwizz4 Mar 31 at 15:36

Pylongolf, 11 bytes (Non-Competing)


Pushes into the stack then p opens it.

share|improve this answer
Will that open it as a local file, or as a website address? – wizzwizz4 Mar 30 at 18:09
And did you just add the changes that allowed this to work? – Eᴀsᴛᴇʀʟʏ Iʀᴋ Mar 30 at 18:09
@wizzwizz4 As an address. Yes, so this does not compete with others, just for fun. – Midnightas Mar 30 at 18:23
If I were you, I would edit "(Non-competing)" into the title, so people don't downvote. – wizzwizz4 Mar 30 at 18:24
@wizzwizz4 done. – Eᴀsᴛᴇʀʟʏ Iʀᴋ Mar 31 at 19:57

Racket, 41 bytes

(require net/sendurl)(send-url"")
share|improve this answer

Java 8, 115 112 bytes

interface P{static void main(String[]a)throws Exception{java.awt.Desktop.getDesktop().browse(new""));}}

Java is not the best language for golfing... Here's the same program in a more readable format:

interface P {
    static void main (String[] a) throws Exception {

Saved 2 bytes by removing // (thanks @CoolestVeto), and another byte by switching to .ga from .lol (indirect thanks to @Milo)

share|improve this answer
You can remove the //. – VTCAKAVSMoACE Mar 30 at 19:04
Isn't it supposed to be – Ryan Mar 31 at 14:04
cant you replace interface with class? – MCMastery Mar 31 at 15:24
@MCMastery Yes. However, with an interface, you can save 3 bytes because even though interface is longer than class, you save more bytes because the public modifier is implied. – Alex L. Mar 31 at 19:32
@Ryan Whoops. Fail. Yes, you're right. Thanks! – Alex L. Mar 31 at 19:34

Applescript, 28 bytes

  • 3 bytes saved thanks to @CoolestVeto.
open location""
share|improve this answer
how dare a high-rep user not format their header correctly D: – cat Apr 11 at 0:08
@cat actually, I've never been called out on this before - I've always operated on the assumption that bytes is the default for codegolf (and is even explicitly specified in this question), so explicitly respecifying in answers is just redundant information. Do you know of a meta post about this? – Digital Trauma Apr 14 at 5:32
Well, first and foremost, my comment was messing around -- I only changed it for consistency with all the other answers, and it's really insignificant but it bothered me. I'm pretty sure there's no meta post on formatting specifically, and that this format came from the Leaderboard Stack Snippets, but I'm almost certain there's a meta post for Defaults for Scoring Code Golf that says it's bytes unless otherwise specified. – cat Apr 14 at 10:15
@cat Yep, I don't think its a big deal either way - I'm certainly not planning on rolling back your edit :). Scoring by bytes by default is in the code-golf tag wiki – Digital Trauma Apr 14 at 10:32

Mathematica, 28 bytes

share|improve this answer
That would be 16 bytes in Mthmtca. – Michael Stern Mar 30 at 18:40
Do you need //? – VTCAKAVSMoACE Mar 30 at 19:04
@CoolestVeto I think I do. – Martin Ender Mar 30 at 19:05
@MichaelStern Is that a thing? I want. – Mario Carneiro Mar 31 at 12:49
@MarioCarneiro A development version can be found at I don't have the system to make it work, but I'm counting on future releases being platform-agnostic. – Michael Stern Mar 31 at 12:52

R, 26 bytes


I don't know of any shorter way to do this in R.

share|improve this answer
Duplicate of this. Simply wrapping another answer in a system/fork/whatever call is a trivial modification. – Mego Mar 30 at 19:40

Actionscript 3, 117 bytes

package{import flash.display.Sprite;public class A extends Sprite{function A(){navigateToUrl("","_blank")}}}

Like Java, this is not a great golfing language. Here's the code with formatting:

    import flash.display.Sprite;

    public class A extends Sprite
        function A()
            navigateToUrl("", "_blank")
share|improve this answer

Perl 5, 66 58 bytes

Should work everywhere, but needs that import :(

8 bytes saved with @msh210 comment.

use Browser::Open open_browser;open_browser""

Also, for funsies :

Perl 5 (Windows), 34 bytes

system "start"

Perl 5 (Unix), 31 bytes

system "xdg-open"
share|improve this answer
+1 for still use Perl ;-) (private joke) – Paul Gaborit Apr 1 at 13:42
use -M instead of use to shave a coupla bytes. (Untested.) Also, I'm guessing you don't need the parens or the www.. (Also untested.) – msh210 Apr 1 at 21:40
@msh210 Can't seem to get the -M switch to work apparently on my Mac... (?), but indeed the www as well as the // can be removed. Thanks ! – Paul Picard Apr 3 at 8:46

VBScript, 57 bytes

I used to have lots of fun creating tiny programs in VBScript, back in 2010.

I've remembered this language and used the code on:

It still works on Windows 7, at least.

set S=CreateObject("WScript.Shell")"")

This is a bit different from the usual start, in the sense that it executes the directly, with an implicit start.

An alternative way would be "cmd.exe /C start".

share|improve this answer

RFO-BASIC, 22 bytes


Read about RFO-BASIC at

share|improve this answer
While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review – Mego Apr 1 at 16:06
Alright. I just figured most people wouldn't know about this "dialect" of BASIC. – TickTock Apr 1 at 16:07

Rebol 2, 16 15 bytes


if you accept an error before opening the page on Linux, no error on Windows

20 bytes without an error

share|improve this answer
Alternative to the first one (although with the same score): browse – Izkata Apr 1 at 20:02
now with shorter url.( – sqlab Apr 13 at 11:53

C#, 33 bytes


Opens the default browser to the web address

share|improve this answer
Nope... Replace \\ via //. – Qwertiy Mar 31 at 1:16
not a c# program, just a single line – BryanJ Apr 1 at 13:31
Also this needs the System.Diagnostics namespace to be added in or Process to be fully qualified to work. – TheLethalCoder Apr 1 at 15:25
This is not a c# program. – VSG24 Apr 3 at 14:36

05AB1E, 16 bytes (non-competing)

Non-competing, since the features used here postdate the challenge. Code:

’…Ò ™³.ÐÏg.´¢’.E

You can try the string online here. This basically evaluates to this batch answer.

Uses the CP1252 encoding.

share|improve this answer
How do you count the bytes? Depending which program I use for counting I get from 21 to 34 bytes. – sqlab Mar 31 at 8:57
@sqlab 05AB1E uses the CP1252 encoding. – Adnan Mar 31 at 9:01

VB.NET, 32 30 bytes

share|improve this answer
+10 for Sub Main(), and +7 for End Sub, which you need in order to run this at least in a VB.NET console program, also you would need to import System.Diagnostics. – lightswitchr Apr 12 at 12:26

Factor, 38 36 26 bytes

[ "" open-url ]

I didn't know one could golf-off the // in the protocol.

share|improve this answer
I think you can remove the space between the end-quote and run-process, and you can wholly drop //. – VTCAKAVSMoACE Mar 30 at 19:16
@CoolestVeto Thanks! I didn't know the // could be left off. As for the space between " and run-process, dropping that would require a word named "run-process to be present in the current vocabulary search path – cat Mar 30 at 19:22
@CoolestVeto Factor's like Forth -- highly whitespace dependent – cat Mar 30 at 19:24
Duplicate of this. Simply wrapping another answer in a system/fork/whatever call is a trivial modification. – Mego Mar 30 at 19:35
@Mego Okay, well, not that it really matters but I did come up with this without seeing that one. But, there is really no other way to run The default browser without xdg-open in languages which are not equipped with special functions for browsing the web. A C or ASM answer would surely also have to do system("xdg-open...") – cat Mar 30 at 19:44

Common Lisp, 31 bytes

(ext:shell "open")
share|improve this answer

Python, 44 bytes

from webbrowser import*;open('')

URL from this comment
Edit: seems to become more popular now (but it WAS available when I posted this answer).


from webbrowser import * # Loads everything in the webbrowser module
open("") # Opens default browser to

Python, 44 bytes

from webbrowser import*;open('')

URL from this answer


from webbrowser import * # Loads everything in the webbrowser module
open("") # Opens default browser to

Python, 45 bytes

from webbrowser import*;open('')


from webbrowser import * # Loads everything in the webbrowser module
open('') # Opens default browser to

Take that,! (1 byte shorter)

Note: I added a separate answer leading to, 'cause I've noticed the other sites doesn't work for me in Internet explorer 11, and I saw other users having this problem too.

Both are non-non-competing (read that right?)

share|improve this answer

Ruby, 22 20 19 bytes (on OS X)



Thanks to Daniel for 2 bytes off.

share|improve this answer
You can save 2 characters by using backticks instead of %x. open – Daniel Evans Mar 31 at 7:31
@DanielEvans Great, thanks. That saves 2 bytes. – Eᴀsᴛᴇʀʟʏ Iʀᴋ Mar 31 at 15:18
"'open' is not recognized as an internal or external command, operable program or batch file." – Dewi Morgan Apr 1 at 18:07
@DewiMorgan OS X only. – Eᴀsᴛᴇʀʟʏ Iʀᴋ Apr 1 at 22:35

NodeJS, 53 bytes


Works on mac.

share|improve this answer
Duplicate of this – Mego Mar 30 at 18:58

protected by Mego Apr 2 at 2:15

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